<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!-- Created with Inkscape (http://www.inkscape.org/) -->

<svg
   xmlns:dc="http://purl.org/dc/elements/1.1/"
   xmlns:cc="http://creativecommons.org/ns#"
   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
   xmlns:svg="http://www.w3.org/2000/svg"
   xmlns="http://www.w3.org/2000/svg"
   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
   width="250.5625"
   height="107.36588"
   viewBox="0 0 250.5625 107.36588"
   version="1.1"
   id="svg8653"
   inkscape:version="0.92.2 5c3e80d, 2017-08-06"
   sodipodi:docname="primitive_topology_line_list_with_adjacency.svg">
  <defs
     id="defs8647">
    <marker
       inkscape:isstock="true"
       style="overflow:visible;"
       id="marker9663"
       refX="0.0"
       refY="0.0"
       orient="auto"
       inkscape:stockid="Arrow1Mend">
      <path
         transform="scale(0.4) rotate(180) translate(10,0)"
         style="fill-rule:evenodd;stroke:#000000;stroke-width:1pt;stroke-opacity:1;fill:#000000;fill-opacity:1"
         d="M 0.0,0.0 L 5.0,-5.0 L -12.5,0.0 L 5.0,5.0 L 0.0,0.0 z "
         id="path9661" />
    </marker>
    <inkscape:path-effect
       only_selected="false"
       apply_with_weight="true"
       apply_no_weight="true"
       helper_size="0"
       steps="2"
       weight="33.333333"
       is_visible="true"
       id="path-effect9659"
       effect="bspline" />
    <inkscape:path-effect
       only_selected="false"
       apply_with_weight="true"
       apply_no_weight="true"
       helper_size="0"
       steps="2"
       weight="33.333333"
       is_visible="true"
       id="path-effect9655"
       effect="bspline" />
    <inkscape:path-effect
       effect="bspline"
       id="path-effect9645"
       is_visible="true"
       weight="33.333333"
       steps="2"
       helper_size="0"
       apply_no_weight="true"
       apply_with_weight="true"
       only_selected="false" />
    <marker
       inkscape:stockid="Arrow1Mend"
       orient="auto"
       refY="0.0"
       refX="0.0"
       id="Arrow1Mend"
       style="overflow:visible;"
       inkscape:isstock="true"
       inkscape:collect="always">
      <path
         id="path5594"
         d="M 0.0,0.0 L 5.0,-5.0 L -12.5,0.0 L 5.0,5.0 L 0.0,0.0 z "
         style="fill-rule:evenodd;stroke:#000000;stroke-width:1pt;stroke-opacity:1;fill:#000000;fill-opacity:1"
         transform="scale(0.4) rotate(180) translate(10,0)" />
    </marker>
    <inkscape:path-effect
       effect="bspline"
       id="path-effect9609"
       is_visible="true"
       weight="33.333333"
       steps="2"
       helper_size="0"
       apply_no_weight="true"
       apply_with_weight="true"
       only_selected="false" />
    <marker
       inkscape:stockid="Arrow1Mstart"
       orient="auto"
       refY="0"
       refX="0"
       id="marker6744-8-2"
       style="overflow:visible"
       inkscape:isstock="true">
      <path
         inkscape:connector-curvature="0"
         id="path6742-9-67"
         d="M 0,0 5,-5 -12.5,0 5,5 Z"
         style="fill:#fb0000;fill-opacity:1;fill-rule:evenodd;stroke:#fb0000;stroke-width:1.00000003pt;stroke-opacity:1"
         transform="matrix(0.4,0,0,0.4,4,0)" />
    </marker>
    <marker
       inkscape:stockid="Arrow1Mstart"
       orient="auto"
       refY="0"
       refX="0"
       id="marker6744-8-2-3"
       style="overflow:visible"
       inkscape:isstock="true">
      <path
         inkscape:connector-curvature="0"
         id="path6742-9-67-0"
         d="M 0,0 5,-5 -12.5,0 5,5 Z"
         style="fill:#fb0000;fill-opacity:1;fill-rule:evenodd;stroke:#fb0000;stroke-width:1.00000003pt;stroke-opacity:1"
         transform="matrix(0.4,0,0,0.4,4,0)" />
    </marker>
  </defs>
  <sodipodi:namedview
     id="base"
     pagecolor="#ffffff"
     bordercolor="#666666"
     borderopacity="1.0"
     inkscape:pageopacity="0.0"
     inkscape:pageshadow="2"
     inkscape:zoom="5.7069807"
     inkscape:cx="125.23828"
     inkscape:cy="53.682935"
     inkscape:document-units="px"
     inkscape:current-layer="layer1"
     showgrid="true"
     inkscape:window-width="1920"
     inkscape:window-height="1001"
     inkscape:window-x="-9"
     inkscape:window-y="-9"
     inkscape:window-maximized="0"
     fit-margin-top="1"
     fit-margin-left="1"
     fit-margin-right="1"
     fit-margin-bottom="1"
     inkscape:snap-grids="true"
     inkscape:snap-text-baseline="true"
     inkscape:snap-object-midpoints="true"
     units="px"
     borderlayer="false">
    <inkscape:grid
       type="xygrid"
       id="grid9626"
       originx="5.4921875"
       originy="-495.5091" />
  </sodipodi:namedview>
  <metadata
     id="metadata8650">
    <rdf:RDF>
      <cc:Work
         rdf:about="">
        <dc:format>image/svg+xml</dc:format>
        <dc:type
           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
        <dc:title />
      </cc:Work>
    </rdf:RDF>
  </metadata>
  <g
     inkscape:label="Layer 1"
     inkscape:groupmode="layer"
     id="layer1"
     transform="translate(-7.0422058,180.9101)">
    <text
       xml:space="preserve"
       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:16px;line-height:1.25;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';font-variant-ligatures:normal;font-variant-caps:normal;font-variant-numeric:normal;font-feature-settings:normal;text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1.16427398"
       x="12.534393"
       y="-168.0351"
       id="text5070-2-2-9-9"><tspan
         sodipodi:role="line"
         id="tspan5068-0-3-36-9"
         x="12.534393"
         y="-168.0351"
         style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:16px;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';font-variant-ligatures:normal;font-variant-caps:normal;font-variant-numeric:normal;font-feature-settings:normal;text-align:center;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke-width:1.16427398">0</tspan></text>
    <text
       xml:space="preserve"
       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:16px;line-height:1.25;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';font-variant-ligatures:normal;font-variant-caps:normal;font-variant-numeric:normal;font-feature-settings:normal;text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1.16427398"
       x="172.53439"
       y="-168.0351"
       id="text5070-2-2-9-9-7"><tspan
         sodipodi:role="line"
         id="tspan5068-0-3-36-9-6"
         x="172.53439"
         y="-168.0351"
         style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:16px;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';font-variant-ligatures:normal;font-variant-caps:normal;font-variant-numeric:normal;font-feature-settings:normal;text-align:center;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke-width:1.16427398">2</tspan></text>
    <text
       xml:space="preserve"
       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:16px;line-height:1.25;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';font-variant-ligatures:normal;font-variant-caps:normal;font-variant-numeric:normal;font-feature-settings:normal;text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1.16427398"
       x="92.534393"
       y="-168.0351"
       id="text5070-2-2-9-9-6"><tspan
         sodipodi:role="line"
         id="tspan5068-0-3-36-9-4"
         x="92.534393"
         y="-168.0351"
         style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:16px;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';font-variant-ligatures:normal;font-variant-caps:normal;font-variant-numeric:normal;font-feature-settings:normal;text-align:center;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke-width:1.16427398">1</tspan></text>
    <text
       xml:space="preserve"
       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:16px;line-height:1.25;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';font-variant-ligatures:normal;font-variant-caps:normal;font-variant-numeric:normal;font-feature-settings:normal;text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1.16427398"
       x="252.53439"
       y="-168.0351"
       id="text5070-2-2-9-9-77"><tspan
         sodipodi:role="line"
         id="tspan5068-0-3-36-9-5"
         x="252.53439"
         y="-168.0351"
         style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:16px;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';font-variant-ligatures:normal;font-variant-caps:normal;font-variant-numeric:normal;font-feature-settings:normal;text-align:center;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke-width:1.16427398">3</tspan></text>
    <circle
       style="fill:#000000;fill-opacity:1;stroke:none;stroke-width:1;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
       id="path4517-0-8-5-8"
       cx="12.534393"
       cy="-158.03511"
       r="3.4908931" />
    <circle
       style="fill:#000000;fill-opacity:1;stroke:none;stroke-width:1;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
       id="path4517-0-8-5-2"
       cx="172.53439"
       cy="-158.03511"
       r="3.4908931" />
    <circle
       style="fill:#000000;fill-opacity:1;stroke:none;stroke-width:1;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
       id="path4517-0-8-5-5-0"
       cx="252.53439"
       cy="-158.03511"
       r="3.4908931" />
    <text
       xml:space="preserve"
       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:16px;line-height:1.25;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';font-variant-ligatures:normal;font-variant-caps:normal;font-variant-numeric:normal;font-feature-settings:normal;text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1.16427398"
       x="12.534393"
       y="-88.035088"
       id="text5070-2-2-9-9-0"><tspan
         sodipodi:role="line"
         id="tspan5068-0-3-36-9-1"
         x="12.534393"
         y="-88.035088"
         style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:16px;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';font-variant-ligatures:normal;font-variant-caps:normal;font-variant-numeric:normal;font-feature-settings:normal;text-align:center;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke-width:1.16427398">4</tspan></text>
    <text
       xml:space="preserve"
       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:16px;line-height:1.25;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';font-variant-ligatures:normal;font-variant-caps:normal;font-variant-numeric:normal;font-feature-settings:normal;text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1.16427398"
       x="172.53439"
       y="-88.035088"
       id="text5070-2-2-9-9-7-3"><tspan
         sodipodi:role="line"
         id="tspan5068-0-3-36-9-6-8"
         x="172.53439"
         y="-88.035088"
         style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:16px;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';font-variant-ligatures:normal;font-variant-caps:normal;font-variant-numeric:normal;font-feature-settings:normal;text-align:center;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke-width:1.16427398">6</tspan></text>
    <text
       xml:space="preserve"
       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:16px;line-height:1.25;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';font-variant-ligatures:normal;font-variant-caps:normal;font-variant-numeric:normal;font-feature-settings:normal;text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1.16427398"
       x="92.534393"
       y="-88.035088"
       id="text5070-2-2-9-9-6-4"><tspan
         sodipodi:role="line"
         id="tspan5068-0-3-36-9-4-1"
         x="92.534393"
         y="-88.035088"
         style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:16px;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';font-variant-ligatures:normal;font-variant-caps:normal;font-variant-numeric:normal;font-feature-settings:normal;text-align:center;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke-width:1.16427398">5</tspan></text>
    <text
       xml:space="preserve"
       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:16px;line-height:1.25;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';font-variant-ligatures:normal;font-variant-caps:normal;font-variant-numeric:normal;font-feature-settings:normal;text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1.16427398"
       x="252.53439"
       y="-88.035088"
       id="text5070-2-2-9-9-77-7"><tspan
         sodipodi:role="line"
         id="tspan5068-0-3-36-9-5-3"
         x="252.53439"
         y="-88.035088"
         style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:16px;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';font-variant-ligatures:normal;font-variant-caps:normal;font-variant-numeric:normal;font-feature-settings:normal;text-align:center;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke-width:1.16427398">7</tspan></text>
    <circle
       style="fill:#000000;fill-opacity:1;stroke:none;stroke-width:1;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
       id="path4517-0-8-5-8-7"
       cx="12.534393"
       cy="-78.035103"
       r="3.4908931" />
    <circle
       style="fill:#000000;fill-opacity:1;stroke:none;stroke-width:1;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
       id="path4517-0-8-5-2-4"
       cx="172.53439"
       cy="-78.035103"
       r="3.4908931" />
    <circle
       style="fill:#000000;fill-opacity:1;stroke:none;stroke-width:1;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
       id="path4517-0-8-5-5-0-2"
       cx="252.53439"
       cy="-78.035103"
       r="3.4908931" />
    <path
       style="fill:none;stroke:#000000;stroke-width:1;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:4, 4;stroke-dashoffset:0;stroke-opacity:1"
       d="m 12.534393,-158.0351 h 80 m 79.999997,0 h 80"
       id="path2031"
       inkscape:connector-curvature="0" />
    <path
       style="fill:none;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
       d="M 92.534393,-158.0351 H 172.53439"
       id="path2033"
       inkscape:connector-curvature="0" />
    <path
       style="fill:none;stroke:#000000;stroke-width:1;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:4, 4;stroke-dashoffset:0;stroke-opacity:1"
       d="m 12.534393,-78.035103 h 80 m 79.999997,0 h 80"
       id="path2031-2"
       inkscape:connector-curvature="0" />
    <path
       style="fill:none;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
       d="M 92.534393,-78.035103 H 172.53439"
       id="path2033-5"
       inkscape:connector-curvature="0" />
    <circle
       style="fill:#ff0000;fill-opacity:1;stroke:none;stroke-width:1;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
       id="path4517-0-8-5-91-0-3"
       cx="92.534393"
       cy="-158.03511"
       r="3.4908931" />
    <circle
       style="fill:#ff0000;fill-opacity:1;stroke:none;stroke-width:1;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
       id="path4517-0-8-5-91-0-3-9"
       cx="92.534393"
       cy="-78.035118"
       r="3.4908931" />
    <path
       style="fill:none;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;marker-end:url(#Arrow1Mend)"
       d="m 107.5344,-83.035117 c 16.66766,0 33.33433,0 50,0"
       id="path9607"
       inkscape:connector-curvature="0"
       inkscape:path-effect="#path-effect9609"
       inkscape:original-d="m 107.5344,-83.035117 c 16.66766,-0.001 33.33433,-0.001 50,0" />
    <path
       style="fill:none;stroke:#ff0000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
       d="m 92.534393,-78.03512 c 3.334531,-1.667265 6.667866,-3.333932 9.999997,-4.999997"
       id="path9643"
       inkscape:connector-curvature="0"
       inkscape:path-effect="#path-effect9645"
       inkscape:original-d="m 92.534393,-78.03512 c 3.334334,-1.66766 6.667667,-3.33433 9.999997,-4.999997" />
    <path
       inkscape:original-d="m 107.5344,-163.03511 c 16.66766,-0.001 33.33433,-0.001 50,0"
       inkscape:path-effect="#path-effect9655"
       inkscape:connector-curvature="0"
       id="path9653"
       d="m 107.5344,-163.03511 c 16.66766,0 33.33433,0 50,0"
       style="fill:none;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;marker-end:url(#marker9663)" />
    <path
       inkscape:original-d="m 92.534393,-158.03512 c 3.334334,-1.66766 6.667667,-3.33433 9.999997,-4.99999"
       inkscape:path-effect="#path-effect9659"
       inkscape:connector-curvature="0"
       id="path9657"
       d="m 92.534393,-158.03512 c 3.334532,-1.66726 6.667868,-3.33393 9.999997,-4.99999"
       style="fill:none;stroke:#ff0000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1" />
  </g>
</svg>